1 # SPDX-License-Identifier: GPL-2.0
5 select ARCH_MIGHT_HAVE_PC_PARPORT
6 select ARCH_MIGHT_HAVE_PC_SERIO
8 select ARCH_NO_SG_CHAIN
9 select ARCH_USE_CMPXCHG_LOCKREF
10 select FORCE_PCI if !ALPHA_JENSEN
11 select PCI_DOMAINS if PCI
12 select PCI_SYSCALL if PCI
16 select HAVE_PCSPKR_PLATFORM
17 select HAVE_PERF_EVENTS
18 select NEED_DMA_MAP_STATE
19 select NEED_SG_DMA_LENGTH
21 select GENERIC_IRQ_PROBE
22 select GENERIC_PCI_IOMAP if PCI
23 select AUTO_IRQ_AFFINITY if SMP
24 select GENERIC_IRQ_SHOW
25 select ARCH_WANT_IPC_PARSE_VERSION
26 select ARCH_HAVE_NMI_SAFE_CMPXCHG
28 select GENERIC_CLOCKEVENTS
29 select GENERIC_CPU_VULNERABILITIES
30 select GENERIC_SMP_IDLE_THREAD
31 select GENERIC_STRNCPY_FROM_USER
32 select GENERIC_STRNLEN_USER
33 select HAVE_ARCH_AUDITSYSCALL
34 select HAVE_MOD_ARCH_SPECIFIC
35 select MODULES_USE_ELF_RELA
36 select ODD_RT_SIGACTION
38 select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
40 The Alpha is a 64-bit general-purpose processor designed and
41 marketed by the Digital Equipment Corporation of blessed memory,
42 now Hewlett-Packard. The Alpha Linux project has a home page at
43 <http://www.alphalinux.org/>.
52 config RWSEM_GENERIC_SPINLOCK
55 config RWSEM_XCHGADD_ALGORITHM
59 config ARCH_HAS_ILOG2_U32
63 config ARCH_HAS_ILOG2_U64
67 config GENERIC_CALIBRATE_DELAY
75 config GENERIC_ISA_DMA
89 prompt "Alpha system type"
92 This is the system type of your hardware. A "generic" kernel will
93 run on any supported Alpha system. However, if you configure a
94 kernel for your specific system, it will be faster and smaller.
96 To find out what type of Alpha system you have, you may want to
97 check out the Linux/Alpha FAQ, accessible on the WWW from
98 <http://www.alphalinux.org/>. In summary:
100 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
101 Alpha-XL XL-233, XL-266
102 AlphaBook1 Alpha laptop
103 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
104 Cabriolet AlphaPC64, AlphaPCI64
105 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
106 EB164 EB164 21164 evaluation board
107 EB64+ EB64+ 21064 evaluation board
108 EB66 EB66 21066 evaluation board
109 EB66+ EB66+ 21066 evaluation board
110 Jensen DECpc 150, DEC 2000 models 300, 500
113 Miata Personal Workstation 433/500/600 a/au
114 Marvel AlphaServer ES47 / ES80 / GS1280
116 Noname AXPpci33, UDB (Multia)
117 Noritake AS 1000A, AS 600A, AS 800
119 Rawhide AS 1200, AS 4000, AS 4100
120 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
122 Sable AS 2000, AS 2100
125 Titan AlphaServer ES45 / DS25 / DS15
126 Wildfire AlphaServer GS 40/80/160/320
128 If you don't know what to do, choose "generic".
135 A generic kernel will run on all supported Alpha hardware.
138 bool "Alcor/Alpha-XLT"
141 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
142 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
143 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
144 controller (256-bit memory bus) and a PCI interface. It also does
145 all the work required to support an external Bcache and to maintain
146 memory coherence when a PCI device DMAs into (or out of) memory.
151 XL-233 and XL-266-based Alpha systems.
156 Dec AlphaBook1/Burns Alpha-based laptops.
158 config ALPHA_AVANTI_CH
161 config ALPHA_CABRIOLET
164 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
165 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
166 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
167 Bcache SIMMs. Requires power supply with 3.3V output.
172 Various 21264 systems with the tsunami core logic chipset.
173 API Networks: 264DP, UP2000(+), CS20;
174 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
179 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
180 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
181 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
182 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
183 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
184 motherboard. Requires power supply with 3.3V output.
186 config ALPHA_EB64P_CH
192 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
193 identical to EB64+. Baby PC-AT size. Runs from standard PC power
194 supply. The EB66 schematic was published as a marketing poster
195 advertising the 21066 as "the first microprocessor in the world with
201 Later variant of the EB66 board.
206 Apparently an obscure OEM single-board computer based on the
207 Typhoon/Tsunami chipset family. Information on it is scanty.
214 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
215 of the first-generation Alpha systems. A number of these systems
216 seem to be available on the second- hand market. The Jensen is a
217 floor-standing tower system which originally used a 150MHz 21064 It
218 used programmable logic to interface a 486 EISA I/O bridge to the
224 A technical overview of this board is available at
225 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
231 AlphaServer 2100A-based systems.
236 AlphaServer ES47 / ES80 / GS1280 based on EV7.
242 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
248 AlphaServer 1000-based Alpha systems.
250 config ALPHA_NAUTILUS
253 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
255 config ALPHA_NONAME_CH
258 config ALPHA_NORITAKE
262 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
275 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
277 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
282 Samsung APC164UX. There is a page on known problems and workarounds
283 at <http://www.alphalinux.org/faq/FAQ-11.html>.
295 Digital AlphaServer 2000 and 2100-based systems.
303 Alpha 11164-based OEM single-board computer.
308 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
310 config ALPHA_WILDFIRE
313 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
317 # clear all implied options (don't want default values for those):
318 # Most of these machines have ISA slots; not exactly sure which don't,
319 # and this doesn't activate hordes of code, so do it always.
324 Find out whether you have ISA slots on your motherboard. ISA is the
325 name of a bus system, i.e. the way the CPU talks to the other stuff
326 inside your box. Other bus systems are PCI, EISA, MicroChannel
327 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
328 newer boards don't support it. If you have ISA, say Y, otherwise N.
336 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
339 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
340 UDB). This design was produced by Digital's Technical OEM (TOEM)
341 group. It uses the 21066 processor running at 166MHz or 233MHz. It
342 is a baby-AT size, and runs from a standard PC power supply. It has
343 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
344 2 versions, with either PS/2 or large DIN connectors for the
349 depends on ALPHA_JENSEN || (ALPHA_SABLE && !ALPHA_GAMMA) || ALPHA_LYNX || ALPHA_NORITAKE && !ALPHA_PRIMO || ALPHA_MIKASA && !ALPHA_PRIMO || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL || ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
350 default y if !ALPHA_LYNX
354 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
359 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
364 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
367 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
368 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
369 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
370 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
371 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
372 Runs from standard PC power supply.
375 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
376 default y if ALPHA_RX164 || ALPHA_RAWHIDE || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_SABLE && ALPHA_GAMMA || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
380 default y if ALPHA_LYNX && !ALPHA_EV5
384 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
388 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
389 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
392 prompt "EV56 CPU (speed >= 333MHz)?"
393 depends on ALPHA_NORITAKE || ALPHA_PRIMO
396 prompt "EV56 CPU (speed >= 400MHz)?"
397 depends on ALPHA_RAWHIDE
400 bool "EV5 CPU daughtercard (model 5/xxx)?"
401 depends on ALPHA_NORITAKE || ALPHA_MIKASA
403 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
406 bool "EV5 CPU(s) (model 5/xxx)?"
407 depends on ALPHA_SABLE
409 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
413 depends on ALPHA_LYNX
418 depends on ALPHA_SABLE || ALPHA_LYNX
423 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
428 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
433 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
437 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
438 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
440 Is this a machine based on the EV67 core? If in doubt, select N here
441 and the machine will be treated as an EV6.
445 depends on ALPHA_RAWHIDE
450 depends on ALPHA_RX164
453 config ALPHA_IRONGATE
455 depends on ALPHA_NAUTILUS
458 config GENERIC_HWEIGHT
460 default y if !ALPHA_EV67
464 depends on ALPHA_XL || ALPHA_AVANTI_CH
467 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
469 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
471 config ALPHA_BROKEN_IRQ_MASK
473 depends on ALPHA_GENERIC || ALPHA_PC164
478 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
481 Support VGA on an arbitrary hose; needed for several platforms
482 which always have multiple hoses, and whose consoles support it.
486 bool "Run under QEMU emulation"
487 depends on !ALPHA_GENERIC
489 Assume the presence of special features supported by QEMU PALcode
490 that reduce the overhead of system emulation.
492 Generic kernels will auto-detect QEMU. But when building a
493 system-specific kernel, the assumption is that we want to
494 eliminate as many runtime tests as possible.
500 bool "Use SRM as bootloader" if ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_NAUTILUS || ALPHA_NONAME
502 default y if ALPHA_JENSEN || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_DP264 || ALPHA_RAWHIDE || ALPHA_EIGER || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
504 There are two different types of booting firmware on Alphas: SRM,
505 which is command line driven, and ARC, which uses menus and arrow
506 keys. Details about the Linux/Alpha booting process are contained in
507 the Linux/Alpha FAQ, accessible on the WWW from
508 <http://www.alphalinux.org/>.
510 The usual way to load Linux on an Alpha machine is to use MILO
511 (a bootloader that lets you pass command line parameters to the
512 kernel just like lilo does for the x86 architecture) which can be
513 loaded either from ARC or can be installed directly as a permanent
514 firmware replacement from floppy (which requires changing a certain
515 jumper on the motherboard). If you want to do either of these, say N
516 here. If MILO doesn't work on your system (true for Jensen
517 motherboards), you can bypass it altogether and boot Linux directly
518 from an SRM console; say Y here in order to do that. Note that you
519 won't be able to boot from an IDE disk using SRM.
523 config ARCH_MAY_HAVE_PC_FDC
527 bool "Symmetric multi-processing support"
528 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
530 This enables support for systems with more than one CPU. If you have
531 a system with only one CPU, say N. If you have a system with more
534 If you say N here, the kernel will run on uni- and multiprocessor
535 machines, but will use only one CPU of a multiprocessor machine. If
536 you say Y here, the kernel will run on many, but not all,
537 uniprocessor machines. On a uniprocessor machine, the kernel
538 will run faster if you say N here.
540 See also the SMP-HOWTO available at
541 <http://www.tldp.org/docs.html#howto>.
543 If you don't know what to do here, say N.
546 int "Maximum number of CPUs (2-32)"
549 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
550 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
552 MARVEL support can handle a maximum of 32 CPUs, all the others
553 with working support have a maximum of 4 CPUs.
555 config ARCH_DISCONTIGMEM_ENABLE
556 bool "Discontiguous Memory Support"
558 Say Y to support efficient handling of discontiguous physical memory,
559 for architectures which are either NUMA (Non-Uniform Memory Access)
560 or have huge holes in the physical address space for other reasons.
561 See <file:Documentation/vm/numa.rst> for more.
564 bool "NUMA Support (EXPERIMENTAL)"
565 depends on DISCONTIGMEM && BROKEN
567 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
568 Access). This option is for configuring high-end multiprocessor
569 server machines. If in doubt, say N.
572 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
573 default y if ALPHA_QEMU
574 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
575 default n if !ALPHA_SRM && !ALPHA_GENERIC
578 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
579 to sleep until the next interrupt. This may reduce the power
580 consumed, and the heat produced by the computer. However, it has
581 the side effect of making the cycle counter unreliable as a timing
582 device across the sleep.
584 For emulation under QEMU, definitely say Y here, as we have other
585 mechanisms for measuring time than the cycle counter.
587 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
588 MILO, sleep mode is not supported so you might as well say N here.
590 For SMP systems we cannot use the cycle counter for timing anyway,
591 so you might as well say Y here.
598 depends on NEED_MULTIPLE_NODES
600 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
601 config ALPHA_LARGE_VMALLOC
604 Process creation and other aspects of virtual memory management can
605 be streamlined if we restrict the kernel to one PGD for all vmalloc
606 allocations. This equates to about 8GB.
608 Under normal circumstances, this is so far and above what is needed
609 as to be laughable. However, there are certain applications (such
610 as benchmark-grade in-kernel web serving) that can make use of as
611 much vmalloc space as is available.
613 Say N unless you know you need gobs and gobs of vmalloc space.
615 config VERBOSE_MCHECK
616 bool "Verbose Machine Checks"
618 config VERBOSE_MCHECK_ON
619 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
620 depends on VERBOSE_MCHECK
623 This option allows the default printing mode to be set, and then
624 possibly overridden by a boot command argument.
626 For example, if one wanted the option of printing verbose
627 machine checks, but wanted the default to be as if verbose
628 machine check printing was turned off, then one would choose
629 the printing mode to be 0. Then, upon reboot, one could add
630 the boot command line "verbose_mcheck=1" to get the normal
631 verbose machine check printing, or "verbose_mcheck=2" to get
632 the maximum information available.
634 Take the default (1) unless you want more control or more info.
637 prompt "Timer interrupt frequency (HZ)?"
638 default HZ_128 if ALPHA_QEMU
639 default HZ_1200 if ALPHA_RAWHIDE
642 The frequency at which timer interrupts occur. A high frequency
643 minimizes latency, whereas a low frequency minimizes overhead of
644 process accounting. The later effect is especially significant
645 when being run under QEMU.
647 Note that some Alpha hardware cannot change the interrupt frequency
648 of the timer. If unsure, say 1024 (or 1200 for Rawhide).
668 default 128 if HZ_128
669 default 256 if HZ_256
670 default 1200 if HZ_1200
674 tristate "SRM environment through procfs"
677 If you enable this option, a subdirectory inside /proc called
678 /proc/srm_environment will give you access to the all important
679 SRM environment variables (those which have a name) and also
680 to all others (by their internal number).
682 SRM is something like a BIOS for Alpha machines. There are some
683 other such BIOSes, like AlphaBIOS, which this driver cannot
684 support (hey, that's not SRM!).
686 Despite the fact that this driver doesn't work on all Alphas (but
687 only on those which have SRM as their firmware), it's save to
688 build it even if your particular machine doesn't know about SRM
689 (or if you intend to compile a generic kernel). It will simply
690 not create those subdirectory in /proc (and give you some warning,
693 This driver is also available as a module and will be called
698 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
699 # but we also need it if VGA_HOSE is set